The patch titled
Subject: lib/dma-debug: fix bucket_find_contain()
has been added to the -mm tree. Its filename is
lib-dma-debug-fix-bucket_find_contain.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/lib-dma-debug-fix-bucket_find_contain.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/lib-dma-debug-fix-bucket_find_contain.patch
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------------------------------------------------------
From: Sebastian Ott <sebott@xxxxxxxxxxxxxxxxxx>
Subject: lib/dma-debug: fix bucket_find_contain()
bucket_find_contain() will search the bucket list for a dma_debug_entry.
When the entry isn't found it needs to search other buckets too, since
only the start address of a dma range is hashed (which might be in a
different bucket).
A copy of the dma_debug_entry is used to get the previous hash bucket but
when its list is searched the original dma_debug_entry is to be used not
its modified copy.
This fixes false "device driver tries to sync DMA memory it has not allocated"
warnings.
Signed-off-by: Sebastian Ott <sebott@xxxxxxxxxxxxxxxxxx>
Cc: Florian Fainelli <f.fainelli@xxxxxxxxx>
Cc: Horia Geanta <horia.geanta@xxxxxxxxxxxxx>
Cc: Jiri Kosina <jkosina@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/dma-debug.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN lib/dma-debug.c~lib-dma-debug-fix-bucket_find_contain lib/dma-debug.c
--- a/lib/dma-debug.c~lib-dma-debug-fix-bucket_find_contain
+++ a/lib/dma-debug.c
@@ -361,7 +361,7 @@ static struct dma_debug_entry *bucket_fi
unsigned int range = 0;
while (range <= max_range) {
- entry = __hash_bucket_find(*bucket, &index, containing_match);
+ entry = __hash_bucket_find(*bucket, ref, containing_match);
if (entry)
return entry;
_
Patches currently in -mm which might be from sebott@xxxxxxxxxxxxxxxxxx are
s390-remove-use-of-seq_printf-return-value.patch
lib-dma-debug-fix-bucket_find_contain.patch
linux-next.patch
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